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@MSGID:
<b4fe1397-91ae-472c-9365-dbd8e0937f27n@googlegroups.com> 9a4a98da
@REPLY:
<616590d2-4927-4f60-ba91-acef849695a3n@googlegroups.com> 3ccceab1
@REPLYADDR Mild Shock <bursejan@gmail.com>
@REPLYTO 2:5075/128 Mild Shock
@CHRS: CP866 2
@RFC: 1 0
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@TZUTC: -0700
@PID: G2/1.0
@TID: FIDOGATE-5.12-ge4e8b94
I am still fiddling around with (is)/2 implementation.
Formerly Jekejeke Prolog had traditionally automatic
bridging and tunneling. This is all going down the drain,
we want to become more GNU Prolog compatible. Novacore
should be as puritanical as possible, namely a Prolog core that
has an upbringing that disapproves the suggar laced world of
formerly Jekejeke Prolog! Funny discovery, not all Prolog
systems throw the same evaluable errors. Here a little
discrepancy between GNU Prolog and SWI-Prolog:
/* GNU Prolog */
?- X is append(1,2).
uncaught exception: error(type_error(evaluable,append/2),(is)/2)
?- X is append([1,2],[3]).
uncaught exception: error(type_error(evaluable,append/2),(is)/2)
/* SWI-Prolog */
?- X is append(1,2).
ERROR: Arithmetic: `append/2` is not a function
?- X is append([1,2],[3]).
ERROR: Type error: `[]` expected, found `[1,2]` (a list)
("x" must hold one character)
--- G2/1.0
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